// (0.4->0.51 and 0.6->0.49)
// a change by 0.11 is considered a lot, therefor this weighting is stable
sf1.setWeight(0.43);
sf2.setWeight(0.57);
ResultNode resultRoot = new ResultNode(root, new WeightedSum(), alternatives);
resultRoot.analyseSensitivity(weightModifier,
SensitivityAnalysisTestFactory.getSensitivityTest(root, new WeightedSum(), alternatives));
assert(!resultRoot.isSensitive());
}